IDEAL IMAX XTRA E320 Installation And Servicing page 25

28 MAINS VOLTAGE CH AND DHW CONTROLS WITH DHW VALVE OUTPUT
This system provides heating to one zone at a time with DHW
priority controlled by parameter 43. To heat more than one zone
simultaneously, use zone thermostats to energise individual
zone valves with all calls for heat applied to 'CH CALL'. The
boiler will be limited to responding with a set flow temperature
set by parameter 4 (see Frame 31).
N
L
* The switched live from external controls must be from the same phase supply as the boiler
mains supply to ensure that when the boiler supply is switched off the controls are also isolated.
Parameter modifications see Frames 35 to 39.
Parameter 46 = 03 If a live output is required for positioning of
the valve to satisfy CH demand.
Parameter 46 = 23 If a live output is required for positioning of
the valve to satisfy DHW demand.
Alternatives: The Ideal programmable room thermostat and outside sensor kit provides enhanced user comfort. Full
instructions provided with kits.
IMAX XTRA -
Installation & Servicing
INSTALLATION
Programmer
MASTER MODULE
N L
DHW CH
DHW PUMP OR VALVE
CALL CALL
MV
DHW
Cyl Room
stat stat
DHW CH
Motorised
Valve
(Not Mid-position)
External 230 VAC
Programmer *
If all zones are fitted with individual zone valves a hydraulic
bypass will be required to allow pump overrun. See page 6 and
10 for details.
Room
stat
Pump
N L N
CH PUMP MAINS IN
230 VAC
Permanent
mains supply
If pump requires more
than 1 amp supply current,
connection must be made
via a relay
Motorised valve
SLAVE MODULE
L N L
MAINS IN
230 VAC
Permanent
mains supply
Cylinder
thermostat
25